ncsi: Add code to accept command line arguments
Accepts command line arguments for interface index,
ncsi channel,package etc.
Change-Id: Ib2b049a2fb017593a0a4329b26bbd64c65c8b580
Signed-off-by: Ratan Gupta <ratagupt@in.ibm.com>
diff --git a/argument.cpp b/argument.cpp
new file mode 100644
index 0000000..603a54c
--- /dev/null
+++ b/argument.cpp
@@ -0,0 +1,99 @@
+/**
+ * Copyright © 2018 IBM Corporation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <iostream>
+#include <iterator>
+#include <algorithm>
+#include "argument.hpp"
+
+namespace phosphor
+{
+namespace network
+{
+namespace ncsi
+{
+
+ArgumentParser::ArgumentParser(int argc, char** argv)
+{
+ int option = 0;
+ while (-1 != (option = getopt_long(argc, argv, optionStr, options, NULL)))
+ {
+ if ((option == '?') || (option == 'h'))
+ {
+ usage(argv);
+ exit(-1);
+ }
+
+ auto i = &options[0];
+ while ((i->val != option) && (i->val != 0))
+ {
+ ++i;
+ }
+
+ if (i->val)
+ {
+ arguments[i->name] = (i->has_arg ? optarg : trueString);
+ }
+ }
+}
+
+const std::string& ArgumentParser::operator[](const std::string& opt)
+{
+ auto i = arguments.find(opt);
+ if (i == arguments.end())
+ {
+ return emptyString;
+ }
+ else
+ {
+ return i->second;
+ }
+}
+
+void ArgumentParser::usage(char** argv)
+{
+ std::cerr << "Usage: " << argv[0] << " [options]\n";
+ std::cerr << "Options:\n";
+ std::cerr << " --help Print this menu.\n";
+ std::cerr << " --info=<info> Retrieve info about NCSI topology.\n";
+ std::cerr << " --set=<set> Set a specific package/channel.\n";
+ std::cerr << " --clear=<clear> Clear all the settings on the interface.\n";
+ std::cerr << " --package=<package> Specify a package.\n";
+ std::cerr << " --channel=<channel> Specify a channel.\n";
+ std::cerr << " --index=<device index> Specify device ifindex.\n";
+ std::cerr << std::flush;
+}
+
+const option ArgumentParser::options[] =
+{
+ { "info", no_argument, NULL, 'i' },
+ { "set", no_argument, NULL, 's' },
+ { "clear", no_argument, NULL, 'r' },
+ { "package", required_argument, NULL, 'p' },
+ { "channel", required_argument, NULL, 'c' },
+ { "index", required_argument, NULL, 'x' },
+ { "help", no_argument, NULL, 'h' },
+ { 0, 0, 0, 0},
+};
+
+const char* ArgumentParser::optionStr = "i:s:r:p:c:x:h?";
+
+const std::string ArgumentParser::trueString = "true";
+const std::string ArgumentParser::emptyString = "";
+
+} //namespace ncsi
+} //namespace network
+} //namespece phosphor
+